Pyramid of numbers - ecological pyramids, Biology

Pyramid of Numbers - Ecological Pyramids

A graphic representation of the total number of individuals of different species belonging to each trophic level in an ecosystem is known as pyramid of numbers. It consists of a number of horizontal bars depicting specific trophic levels which are arranged sequentially from primary producer level through herbivore, carnivore onwards. The length of each bar represents the total number of individuals

2405_Pyramid of Numbers - Ecological Pyramids.png

Figure: An upright pyramid of numbers. The number of individuals indicated in the figure is hypothetical, and the organisms are not drawn to the same scale.

at each trophic level in an ecosystem. The number of individuals drastically decreases with each step towards higher trophic levels and the diagrammatic representation assumes a pyramidal shape and is called pyramid of numbers. In such pyramids, you would find that generally the higher trophic levels are occupied by relatively large-sized animals which are also less abundant. This is due to the fact that animals at higher trophic levels are larger than the animals which they capture from the lower trophic level. In case of tiger or lion, the size relationship does not hold good as cattle and other preys may be larger in size. This could be explained on the basis that these wild cats are powerful and eat their prey by cutting into manageable pieces.

Posted Date: 1/19/2013 12:56:09 AM | Location : United States







Related Discussions:- Pyramid of numbers - ecological pyramids, Assignment Help, Ask Question on Pyramid of numbers - ecological pyramids, Get Answer, Expert's Help, Pyramid of numbers - ecological pyramids Discussions

Write discussion on Pyramid of numbers - ecological pyramids
Your posts are moderated
Related Questions
significance of amoebozoa

TER A T OGEN S - These are chemicals or drugs causing malformed foetus . The production of monsters or malformed foetus is called tertogeny or teratogenesis . Th

natural selection

Q. What is bathing in Cerebro-Spinal Fluid? The CNS is bathing in Cerebro-Spinal Fluid (or CSF):  similar to plasma, less protein, rich in ascorbic acid, different in ions Na+

what are the some examples of phlum protoza?

Explain Pasteurization The act or process of heating a beverage or other food, to a specific temperature for a specific period of time in order to kill microorganisms that cou

Explain about the Zygomycota - Fungi? Fungi belonging to zygomycota are called zygomycetes. Hyphae in this sub-class are coenocytic. Asexual spores develop in sporangia at the

what are the methods of seed formation

Sporogenous Tissue The primary sporogenous cells (PSCs) result after the periclinal division of the archesporial cells. The PSCs may undergo mitotic divisions and increase in

how many chromosomes in human